Polyhydroxy-diamines as low odor, low VOC multi-functional additives for paints and coatings
View Patent ↗Provided are polyhydroxy-diamine compounds for use as neutralizing agents for paints and coatings. The compounds are of the formula (I): wherein R 1 and R 2 are as defined herein.
1. A compound of formula (I):
wherein R 1 and R 2 are independently C 1 -C 10 alkyl, or R 1 and R 2 , together with the carbon to which they are attached, form a C 3 -C 12 cycloalkyl ring optionally substituted with C 1 -C 6 alkyl.
2. A compound according to claim 1 wherein R 1 is C 1 -C 3 alkyl.
3. A compound according to claim 1 wherein R 2 is C 1 -C 3 alkyl.
4. A compound according to claim 1 wherein or R 1 and R 2 , together with the carbon to which they are attached, form a C 5 -C 8 cycloalkyl ring.
5. A compound according to claim 1 selected from: 2-(2-amino-2-methylpropylamino)-2-(hydroxymethyl)propane-1,3-diol, and 2-((1-aminocyclohexyl)methylamino)-2-(hydroxymethyl)propane-1,3-diol.
6. An aqueous based paint or coating comprising a neutralizing agent, a binder, a carrier, and a pigment, wherein the neutralizing agent is a compound of claim 1 .
7. An aqueous based paint or coating according to claim 6 further comprising one or more additional ingredients selected from: leveling agents, surfactants, thickeners, rheology modifiers, co-solvents, corrosion inhibitors, defoamers, co-dispersants, additional aminoalcohol compounds, and biocides.
8. An aqueous based paint or coating according to claim 6 wherein the binder is a latex binder.
9. An aqueous based paint composition according to claim 8 wherein the latex binder is an acrylic, vinyl acrylic, styrenated-acrylic, or vinyl acetate ethylene based material, or mixtures of two or more thereof.
10. A method for reducing the volatile organic compound content of an aqueous based paint or coating that contains a neutralizing agent, a binder, a carrier, and a pigment, the method comprising using as the neutralizing agent an effective amount of a compound of claim 1 .